I apologize for my ignorance but I'm currently running snappyhexmesh locally on a dual core machine. When viewing the system monitor the RAM usage is 100% on one core, 50% on the other and each CPU is less than 5% usage. Also, when reviewing the processes my .Allrun command is "sleeping"

Now, from what I have read there is no correlation between in RAM and CPU usage however, I would think that the process of generating a complex mesh wold require more CPU.